Wrench



V. June 8 192.6.

w. H. TULLY Filed June 1l, 1925 Yea v www Patented June 8, 1925.

semana fuer. :sae-11,. 15251. t-n1 tratarani My invention relates to iinprovefrrtents'in wrenches in which a1 movable jaw rsshelvable along a handle or 4sh'anflr ,cartying.v a

stationary j aw and in which'co-acting teeth are; providedlrt thie shank' and movable jawl for holding the latter in .adjusted position, spring means being provided for laterally shifting said movable jaw to interengage the aforesaid teethl While wrenches of this general type have heretofore been devised, it is the aimy of my invention to greatly simplify and cheapen their construction, at j the same time providing a more desirableshank and Stationary jaw being shown in elevation.

Fig. 3 is a transverse sectional view as in-v dicated by line 3 3 of Fig. 2.

In the drawings above brieiiy described,

the numeral 1 designates a straight elongated shank which may bekof any desired proportions, the front end of said shank being provided with a stationary jaw 2 which projects laterally from one edge thereof, this edge being formed with .a plurality of teeth 3 at points spaced in rear of the aforesaid jaw. Y

Slida'ble freely upon the shank 1, is a substantially flat sleeve 4 having at its front end an integral laterally projecting jaw 5. The sleeve and jaw` are preferably molded in a single piece, as shown, and the edge wall 6 of said sleeve, adjacent the toothed edge of the shank 1, is formed with an integral tooth 7 to engage any of the teeth 3. This edge Wall is also formed with ya transverse opening 8 which is parallel to the plane of the aforesaid toothededge of the shank 1. The opposite edgewall 9 of the sleeve 4 is formed with a relatively large opening 10 leading from the exterior to the interior of said wall and having its vaxis disposed at right angles to the axis of the open.` Jn 8.

gA one-piece U-shaped yoke 11 straddles the sleeve 4 and has its parallel arms 12 disposed at the side walls 13 of said sleeve,v

while 'the armconnectin'g' portio'ir of said yoke iseutwarclly spaeedn-enrtlre edge' T9" and thee iopeun'g.' 10 thereof; y11u-fs connecting portiony14 `is provided witlflia studre which `extends into "the" opening re, and a coiled compression spring 16 surrounds said stud and passes through said op.eningthe outer end of the spring being in contact with the portion 14 of the yoke, Whilethe innerend of said spring contacts with the smooth edgeof the shank 1. A rivet 17 passes through the arms 12 andv through the opening 8 of the edge wall 6,

vsaid rivet securing the yoke 11 to the sleeve 4, so that the action of thespring 16 exerted against the yoke, will cant said sleeve to some extent, insuring successive engage m-ent of the tooth 7 with the'teeth 3 when the sleeve is forced forwardly. The spring ,also functions to engage the teeth of the shank and sleeve after the sleeve 4 has been moved by hand to disengage said teeth and rearwardly adj ustthe sleeve.

A wrench constructed in accordance `with my invention is of extreme simplicityand possesses an unusuallyv small number of parts. By molding the Amovable jaw and its sleeve 4 and forming the openings 8 and 10 at the time of carrying out the molding operation, a saving in cost of manufacture is produced and moreover, by forming one of these openings in one edge wall of the sleeve and the other opening in the opposite ledge wall, neither of these walls is appreciablyy weakened. The provision of the U-shaped yoke 11 to abut the outer end of the 'spring 16, permits this `advantageous location of the opening 8 with respect to the opening 10, andas the arms of this yokel extend across substantially the .entire width of the side walls 13 and are unsecured by rivets vor the like to thesewalls, the latter are in no manr ner weakened. Another advantage for the U-shaped yoke `is that it aftordseifective means to prevent slipping of the users hand on the sleeve 4 when this sleeve is gripped to adjust it and the movable jaw 5.

Itwill be seen from the foregoing that an `exceptionally simple and inexpensive wrench has been provided,l yet that it will be efficient and very desirable, and as excellos l' lent result-shave been obtained fromthe de-` tails disclosed, such details are preferably followed.l However within the scope of the invntion as claimed, mmor changes .may be ma eva r v I claim: L A Wrench comprising an elongated shank having a plurality of spaced t-eeth on onev edge and provided at its front end With a stationary j avv projecting from said edge, a flat elongated, one piece, sleeve slidable on said shank, said sleeve having a lateral avv at its front end and an internal tooth at the rear end of one of its edge Walls, said tooth bein-g' engageable with the shank teeth, the other edge Wall of said sleeve havingl an opening near its rear end, a U-shaped metal yoke Whose arms straddle said sleeve and are disposed at the side Walls thereof and Whose arm-connecting portion is outwardly 4Spaoed from the aforesaid opening, a coiled 4into sai-d spring from said arm-connecting portion, and a rivet passing through the free ends of saidv arms and through said sleeve, said rivet extending through the lirst named edge Wall.

In testimony fixed my signature.

WILLIAM TULLY. e

whereof I have hereunto af- 25 

